docs: def InputValues(self, it, nsteps=None):
          """
              Returns the input values at a given iteration for solving the block outputs
          """
          if nsteps == None:
              nsteps = self.max_input_order
  #        print(self,it)
          # Provides values in inputs values for computing at iteration it
          I = np.zeros((self.n_inputs, nsteps))
          for iv, variable in enumerate(self.inputs):
              #            print(it-self.max_input_order+1,it+1)
              #            print(variable._values[it-self.max_input_order+1:it+1])
              I[iv, :] = variable._values[it-nsteps+1:it+1]
          return I